requested_topping = 'mushrooms'
if requested_topping != 'anchovice':
    print("Hold the anchovice")

age = 18
if age != 19:
    print("\nOMG")

answer = 17
if answer != 42:
    print("\n不等于")

print("\n检查特定值是否不包含在队列中---------banned_user.py")
banned_users = ['andrew', 'carolina', 'david']
user = 'marie'
if user not in banned_users:
    print(user.title() + ", you can post a respnse if you wish.")


car = 'subaru'
if car == 'audi':
    print("\nI predict True.")
    print(car == 'subaru')
else:
    print("\nI predict False.")
    print(car == 'audi')